They are from viking Product No: VLX600S Dimensions: 17.50"x11"x6"
Capacity: 2310 Cubic Inches, Disclaimer: Contact viking prior to order to confirm Product number.
I had to relocate the turn signals with the supplied kit and due to my choice of mounting location i needed to buy four 2 inch long spacers at the hardware store 1/2" x 2" chrome plated brass pipe fittings and some new bolts.